Cutting apparatus for cutting concrete material and the like

ABSTRACT

An improved cutting apparatus, having a cutting blade supported via a frame assembly and an assembly supporting a removable, replaceable tube near the cutting blade, wherein a fluid source is connected to the tube and fluid therefrom is applied generally on the cutting blade prior to the cutting blade cuttingly engaging the material to be cut, the cutting apparatus being particularly useful for cutting concrete and the like wherein the fluid applied to the cutting blade contacts the cut concrete and reduces the concrete dust generally accompanying the cutting process.

United States Patent [191 Manning [45] July 29, 1975 CUTTING APPARATUS FOR CUTTING CONCRETE MATERIAL AND THE LIKE [76] Inventor: Artie L. Manning, 3740 NW. 26,

Oklahoma City, Okla.

[22] Filed: May 23, 1973 [21] Appl. No.: 362,892

[52] US. Cl 125/13 R; 51/267 [51] Int. Cl B28d 1/04 [58] Field of Search 51/267; 125/13 [56] References Cited UNITED STATES PATENTS 1,862,583 6/1932 Skriba .1 51/267 2,455,113 11/1948 CoatesQ. 51/267 X 3,127,886 4/1964 Miller 125/13 R 3,656,468 4/1972 Welden 125/13 R Primary Examiner-l-larold D. Whitehead Attorney, Agent, or Firm-Dunlap & Codding [57] ABSTRACT An improved cutting apparatus, having a cutting blade supported via a frame assembly and an assembly supporting a removable, replaceable tube near the cutting blade, wherein a fluid source is connected to the tube and fluid therefrom is applied generally on the cutting blade prior to the cutting blade cuttingly engaging the material to be cut, the cutting apparatus being particularly useful for cutting concrete and the like wherein the fluid applied to the cutting blade contacts the cut concrete and reduces the concrete dust generally accompanying the cutting process.

10 Claims, 7 Drawing Figures CUTTING APPARATUS FOR CUTTING CONCRETE MATERIAL AND THE LIKE BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates generally to improvements in cutting apparatus apparatus and, more particularly, but not by way of limitation, to an improved cutting apparatus having a fluid applicator assembly.

2. Brief Description of the Prior Art In the past, various devices have been proposed for providing a power driven cutting surface for cutting and severing a variety of materials such as wood, concrete or the like, for example. Some of the cutting devices proposed in the past have been, more particularly, constructed to provide a stationary, floor supported type of apparatus generally designed for permanent installation in a plant or shop facility, and some other cutting devices proposed in the past have been constructed to provide a power driven cutting blade supported via a frame such that the cutting device was of a mobile or portable character.

Referring more particularly to the larger, floor supported types of cutting apparatus, some of the cutting apparatus proposed in the past have been designed to include various devices and assemblies constructed and oriented to deposit a lubricating or cooling fluid on a portion of the cutting blade or on the work piece being cut to reduce the frictional wear and resistance normally encountered during the cutting operation. For example, the Henry U.S. Pat. No. 1,512,889, disclosed a supply nozzle secured to a holder and carried via a guard partially surrounding a grinding disc wherein the nozzle was equipped to supply oil to the grinding mechanism at the point of operation. The Alden U.S. Pat. No. l,081,082, disclosed a similar device wherein cold water was supplied on blades while the blades were being ground via a grinding wheel, the water being supplied to the side of the blade opposite the side engaged via the grinding wheel.

The Wilken U.S. Pat. No. 2,372,699, disclosed a cutting machine wherein a coolant was sprayed on both faces of a cutting tool, the patentee noting that a lubricating liquid could also be utilized either alone or in combination with the coolant supplied to the cutting tool. The Gaines Pat. No. 1,870,774, disclosed a continuous cutting band for sawing meat and the like having a fluid spray apparatus spraying liquid on the cutting band. The Coates U.S. Pat. No. 2,455,113, disclosed a masonry saw having a tube-like apparatus for spraying liquid on the cutting wheel, similar devices having apparatus or assembly for spraying a liquid or the like generally on a cutting or a grinding wheel being disclosed in the Wiken U.S. Pat. No. 2,372,699; the Gaines U.S. Pat. No. 1,870,774; the Hendee U.S. Pat. No. 1,184,095; the Kottman U.S. Pat. No. 2,375,231; the Benedict U.S. Pat. No. 3,097,675; the Mikshel U.S. Pat. No. 1,440,616; and the Fergusson U.S. Pat. No. 1,004,539.

The Fergusson U.S. Pat. No. 992,490, disclosed a hood for protectively enclosing a portion of a friction cutting disc having a plurality of perforated pipes arranged on the interior of the hood for spraying water on the friction disc during the cutting operation. The Patterson U.S. Pat. No. 3,481,086, disclosed a dental model trimmer having a housing encompassing a portion of a grinding wheel including an assembly for feeding water into the housing and ejecting the water against the grinding wheel during the grinding operation. The Williams U.S. Pat. No. 2,899,781, also disclosed a cutting apparatus having an applicator arranged to spray a fluid coolant on a particular portion of the cutting or grinding disc during the operation thereof.

SUMMARY OF THE INVENTION One object of the invention is to provide an improved apparatus for applying a fluid to a cutting blade of a cutting apparatus.

Another object of the invention is to provide an improved apparatus for applying a fluid to a cutting blade of a cutting apparatus having replaceable tube elements.

A further object of the invention is to provide an improved apparatus for cutting concrete material and the like wherein the quantity of dust and residue resulting from the cutting operation is substantially reduced and completely eliminated, in some operations, depending upon the proportion of fluid utilized.

A still further object of the invention is to provide an apparatus for applying fluid to a cutting blade of a portable cutting apparatus which is removable.

One other object of the invention is to provide a cutting apparatus which is safer and more economical in the construction and the operation thereof.

Other objects and advantages of the invention will be evident from the following detailed description when read in conjunction with the accompanying drawings which illustrate one preferred embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I is a side elevational view of a cutting apparatus constructed in accordance with the invention.

FIG. 2 is an enlarged side elevational view of a portion of the cutting apparatus of FIG. 1.

FIG. 3 is a top plan view of the portion of the cutting apparatus of FIGS. 1 and 2.

FIG. 4 is a front elevational view of the portion of the cutting apparatus of FIGS. 1 and 2.

FIG. 5 is a sectional view of the cutting apparatus, taken substantially along the lines 5-5 of FIG. 2.

FIG. 6 is a sectional view of the cutting apparatus, taken substantially along the lines 66 of FIG. 2.

FIG. 7 is an enlarged front plan view showing the connection of the pivot bar to the blade frame of the cutting apparatus of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings in general, and to FIG. I in particular, shown therein and designated via the general reference numeral 10 is a cutting apparatus basically comprising: a frame assembly 12; a cutting blade 14 connected to the frame assembly 12 and supported thereby; a drive assembly 16 connected to the cutting blade 14 and constructed to drivingly move the cutting blade 14 in an actuated on position of the drive assembly 16; and a fluid applicator assembly 18 connected to and supported by a portion of the frame assembly 12, the fluid applicator assembly 18 having one portion connected to a fluid source 20 and another portion disposed near the cutting blade 14. In general, the cutting apparatus 10 is constructed such that the cutting blade 14 thereof can be moved into cutting engagement with various materials such as wood, concrete or the like, for example, in a driven position of the cutting blade 14 via the drive assembly 16 and the fluid applicator assembly 18 is constructed to provide fluidic communication between the fluid source 20 and the portion of the fluid applicator assembly 18 disposed near the cutting blade 14 for applying fluid to a portion of the cutting blade 14 prior to the cutting blade 14 cuttingly engaging the material to be cut. More particularly, the fluid applicator assembly 18 is oriented with respect to the cutting blade 14 to apply the fluid from the fluid source 20 on a predetermined portion of the cutting blade 14 prior to that portion of the cutting blade 14 cuttingly engaging the material to be cut in such a manner that, in one aspect, the fluid applied to the cutting blade 14 serves as a coolant and lubricating fluid reducing the cutting blade 14 wear and reducing the frictional resistance encountered via the cutting blade 14 during the cutting operation, and, in one other aspect, the cutting apparatus is particularly constructed to be utilized in cutting concrete material and the like wherein the fluid applied to the cutting blade 14 via the fluid applicator assembly 18 contacts and engages the concrete material being cut reducing the resulting accumulation of dust, in a manner and for reasons to be described in greater detail below.

The frame assembly 12, more particularly, includes a support frame 22 and a blade frame 24, the blade frame 24 being connected to one end portion of the support frame 22. The support frame 22 includes a handle 26 formed via a portion of the support frame 22 and a handle 28 connected to the support frame 22 generally between the handle 26 and the cutting blade 14. The handles 26 and 28 are each constructed to be grippingly engaged via an operator for maneuvering the cutting blade 14 into cutting engagement with the material to be cut during the operation of the cutting apparatus 10. In one form and as shown in FIG. 1, the support frame 22 also includes a portion housing and supporting the drive assembly 16 and the various elements, such as a chain or a belt, for example, connecting the output of the drive assembly 16 to the cutting blade 14. Cutting apparatus, having a frame assembly constructed to house and support a drive assembly, a cutting blade and the various elements and assemblies drivingly connecting the cutting blade and the drive assembly so the cutting blade can be cuttingly driven in one position of the drive assembly and so the cutting apparatus is maneuverable via an operator grippingly engaging handle portions of the frame assembly, are well-known in the art and commercially available from such manufacturers as Andreas Steihl of West Germany, for example. Therefore, a detailed description of the support frame 22, the drive assembly 16 and the various components connecting the drive assembly 16 to the cutting blade 14 is not required herein.

In one form and as shown in the drawings, the cutting blade 14 is generally circular and shaped in the form of a disc having opposite faces 34 and 36. A cutting surface 38 is formed on the cutting blade 14 and extends peripherally thereabout. The opposite ends of a shaft 40 are each journally supported in a portion of the support frame 22, generally near the cutting blade 14 end thereof, the shaft 40 extending through and being secured to a central portion of the cutting blade 14 such that the shaft 40 rotatably supports the cutting blade 14 via the journalledconnection between the shaft 40 and the support frame 22 while the cutting blade 14 is cuttingly driven via the drive assembly 16, during one aspect of the operation of the cutting apparatus 10.

The blade frame 24 includes a pair of support plates 42 and 44 and a band 46 secured to each of the support plates 42 and 44 providing the structural interconnection therebetween, the support plates 42 and 44 and the band 46 being structurally connected to provide an integral blade frame 24 construction. Each of the support plates 42 and 44 has an outer periphery 48, an inside surface 50 and an outside surface 52. The outer periphery 48 of each of the support plates 42 and 44 includes an arcuately shaped portion 54 and a somewhat diametrically extending portion 56, the band 46 being secured to the arcuately shaped portion 54 of each of the support plates 42 and 44 securing the support plates 42 and 44 in an assembled position wherein the inside surfaces 50 of the support plates 42 and 44 are spaced apart a predetermined distance 58, as shown more clearlyin FIG. 4.

The distance 58 between the inside surfaces 50 of the support plates 42and 44 is sized to accommodate a portion of the cutting blade 14 rotatably disposed between the inside surfaces 50 of the two support plates 42 and 44, the face 34 of the cutting blade 14 being spaced a distance 60 from the inside surface 50 of the support plate 42, the face 36 of the cutting blade 14 being spaced a distance 62 from the inside surface 50 of the support plate 44 and the outer periphery 48 being spaced a distance 64 from the inside surface 66 of the band 46, as shown more'clearly in FIG. 4, for reasons which will be made more apparent'below.

In one form, as shown in FIG; '1, an arcuately shaped slot 68 is formed through the support plate 42 generally between the outer periphery 48 and the shaft 40 connection. The slot 68 is sized to accommodate an adjustable fastener 70 extendingthrough the support frame 22 and through the slot 68 adjustably securing the blade frame 24 to the support frame 22. The fastener 70 is thus connected between the blade frame 24 and the support frame 22 such that the fastener 70 can be loosened and the blade frame 24 rotated about the shaft 40 to a desired or predetermined rotational position, the fastener 70 being then adjusted tosecure the blade frame 24 in the predetermined rotated position thereof with respect to the support frame 22.

As shown more clearly in FIG. 1, the blade frame 24, in a preferred form, protectively encompasses slightly more than one-half of the cutting'blade l4 and includes a pair of reinforcing bars 72. One of the reinforcing bars 72 is secured to the outside surface 52 of the support plate 42, spaced a distance from the diametrically extending portion 56 thereof and extending generally along and parallel with the diametrically extending portion 56 of the support plate 42. The other reinforcing bar 72 issecured to the outside surface 52 of the support plate 44, spaced a distance from the diametrically extending portion 56 and extending along and generally parallel with the diametrically extending portion 56 of the support plate 44. The reinforcing bars 72 each cooperate with the blade frame 24 to increase the structural strength of the blade frame 24.

The handles 26 and 28 each provide a two point suspension connected to the support frame 22 of the frame assembly 12 and located such that the operator can grip the cutting apparatus 10 via the handles 26 and 28 and maneuver the cutting blade 14 into cutting engagement with the material to. be cut. The handle 26 is formed on the support frame 22 generally near one end thereof, opposite the cutting blade 14 end'ofthe support frame 22, and the handle 28 is secured to the support frame 22 generally between the handle 26 and the cutting blade 14, the handle 28 providing the gripping surface utilized primarily to hold the cuttingapparatus in an elevated position and the handle 26 being disposed and oriented to provide a' gripping surface for holding the cutting apparatus 10 in an elevated position and maneuvering the cutting blade 14 end of the'cutting apparatus 10. A solid, cyindrically shaped pivot bar 74 is secured to the blade frame 24,.the pivot bar 74 being more particularly secured to the band 46 generally near the diametrically extending portion 56 of the support plates 42 and 44. Thepivot bar 74 extends transversely with respect to the diametrically extending portions 56 of the support plates 42 and 44, andeach end of the pivot bar 74- extends a predetermined distance beyond one of the outside surfaces 52 of the support plates 42 and 44 and beyond the reinforcing bars 72, as shown more clearly in FIG. 7.

The pivot bar 74 provides a supporting surface formed via an outer peripheral surface 76 thereof engageable with a surface of the material to be cut or a surface generally adjacent the material to be cut (the surface being schematically shown in FIG. land designated therein via the general reference numeral 78 for the purpose of clarity of description) such that the cutting apparatus 10 can be supported-via thehandles 26 and 28 while a substantial portion of the weight of the cutting apparatus 10 is supported via the engagement between the pivot bar 74 and the surface 78. The cutting apparatus 10 is thus supported via the pivot bar 74 at a point generally adjacent the cutting surface 38 of the blade 14 such that the cutting apparatus 10 can be pivoted about the cylindrically shaped supporting surface 76 of the pivot bar 74 pivotally moving the cutting blade 14 and, more particularly, the cutting surface 38 in a pivotal direction 80 generally toward the surface of the material to be cut and in a pivotal direction 82 moving the cutting surface 38 in a direction generally away from the material to be cut. It has been found that the additional and pivotal support provided via the pivot bar 74 is particularly useful when the cutting apparatus is utilized to cut concrete materials and the like having a surface, such 'as the surface 78 schematically shown in FIG. 1, for example, the pivot bar 74 allowing the operator to support and pivotally move the cutting blade 14 into and away from cutting engagement with the material to be cut, the pivot'bar 74 being utilized for controlling the angle and the depth of the cut made via the cutting blade 14 in a more efficient, less strenuous, more accurate and safer manner.,

A generally U-shaped bracket 84, having a pairof legs 86 and 88 connected via a flange 90 is secured to a portion of the blade frame 24 and, more particularly, secured to one of the ends of each of the reinforcing bars 72 generally near the diametrically extending portions 56 of the support plates 42 and 44, the flange 90 extending generally over a portion of the band 46and spaced a predetermined distance 92 therefrom. The

timed to support and orient portions of the fluid appli- "rectangularly shaped support head 96 having an upper surface 98, a lower surface 100, a forward end wall 102, a rearward end wall l04, and opposite sides 106 and 107, as shown more clearly in FIGS. 2, 3, 4, 5 and 6. The support head 96 has a fluid port 108 formed through a portion thereof, a portion of the fluid port 108 intersecting the rearward end wall 104 forming a threaded inlet opening 110.

A tube 112, having a hollow opening 113 extending a distance axially therethrough, and a tube 114, having a hollow opening 115 extending a distance axially therethrough, are each removably disposed and supported within a portion of the fluid port 108. Each of the hollow tubes 112 and 1 14 include an extended portion 116 and 118, respectively, theextended portion 116 of the tube 112 extending a predetermined distance 117 from the lower surface of the support head 98 and the extended portion 118 of the tube 114 extending a predetermined distance 1 19 from the lower surface l00of the support head 96. In one preferred form, as shown more clearly in FIGS. 4 and 5, the tubes 112 and 114 are each similarly constructed and the distances 117 and 119 are substantially equal, for reasons which will be made more apparent below.

The tube 112 has an upper end portion 120 and a lower end portion 122 and the tube 114 has an upper end portion 124 and a lower end portion 126. The hollow opening or portion 113 of the tube 112 extends a distance axially through the tube 112 intersecting the upper end portion 120- thereof, and the hollow opening or portion of the tube 114 extends a distance axially through the tube 114 intersecting the upper end portion 124 thereof, the lower end portions 122 and 126 of the tubes 112 and 114 being closed, as shown more clearly in FIG. 5. A plurality of fluid openings 128 are formed through the extended portion 116 of the tube 112, each of the fluid openings 128 intersecting the hollow portion 1 13 of the tube 1 l2, and a plurality of fluid openings 130 are formed through the extended portion 118 of the tube 1 14, each of the fluid openings 130 intersecting the hollow portion 1 15 of the tube 1 14 (only some of the fluid openings 128 and only some of the fluidopenings 130 being designated via a reference numeral in FIGS. 4 and 5 for the purpose of clarity of description). Thus, the open upper end portion of the tube1l2 is in communication with the fluid openings 128 formed therethrough via the hollow portion 113 thereof and the open upper end portion 124 of the tube 114 is in communication with the fluid openings formed therethrough via the hollow portion 115 thereof, for reasons to be made more apparent below.

A shown in FIG. 5, the upper end portion 120 of the tube 112 is flared radially outwardly forming a downwardly facing stop surface 132 and an upwardly facing engaging surface 134, the stop surface 132 and the engaging surface 134 each extending radially outwardly and circumferentially about the tube 112. The upper end portion 124 of the tube 114 is flared radially outwardly forming a downwardly facing stop surface 136 and an upwardly facingengaging surface 138, the stop surface 136 and the engaging surface 138 each extend- 1 ing radially outwardly and circumferentially about the tube 114. The stop surfaces 132 and 136 are each shaped to engage portions of the support head 96 formed via the fluid port 108 and cooperate therewith to position the tubes 112 and 114 in an assembled position in the support head 96 such that the extended portions 116 and 118 are each extended the distances 117 and 119, respectively, from the lower surface 100 of the support head 96 and the fluid openings 128 and 130 formed through the tubes 112 and 114, respectively, are each in fluidic communication with the fluid port 108 via one of the hollow portions 113 and 115 in an assembled position of the tubes 1 12 and 114 supported and positioned in the support head 96, in a manner to be described in greater detail below.

The fluid port 108 formed in the support head 96, more particularly, comprises a first channel 140 and a second channel 142. The first and the second channels 140 and 142 each extend angularly through the support head 96 generally between the forward end wall 102 and the rearward end wall 104, the first channel 140 more particularly extending at an angle 144 with respect to the angular disposition of the second channel 142, as shown more clearly in FIG. 6. One end of the first channel 140 and one end of the second channel 142 each intersect the rearward end wall 104 of the support head 96 cooperatingly forming the enlarged threaded inlet opening 110 in fluidic communication with each of the channels 140 and 142.

The fluid port 108 also includes a first tube opening 146 formed through the support head 98 intersecting the upper and the lower surfaces 98 and 100 thereof, and a second tube opening 148 formed through the support head 96 intersecting the upper and the lower surfaces 98 and 100 thereof. The first tube opening 146 extends at an angle to the first channel 140 and the end of the first channel 140, opposite the end thereof intersecting the rearward end wall 104, intersects a portion of the first tube opening 146 establishing fluidic communication between the first channel 140 and the first tube opening 146. The seconnd tube opening 148 extends at an angle to the second channel 142 and the end of the second channel 142, opposite the end thereof intersecting the rearward end wall 104, intersects a portion of the second tube opening 148 establishing fluidic communication between the second channel 142 and the second tube opening 148. ln one preferred form, and as shown in the drawings, the first and the second channels 140 and 142 are disposed in substantially the same plane and the first and the second tube openings 146 and 148 each extend transversely through the support head 96, the first tube opening 146 extending through the support head 96 at an angle of substantially 90 with respect to the angular orientation of the first channel 140 and the second tube opening 148 extending through the support head 96 at an angle of substantially 90 with respect to the angular orientation of the second channel 142.

The first and the second tube openings 146 and 148 are .each constructed in a similar manner, each tube opening 146 and l48having an enlarged upper portion 150 intersecting the upper surface 98 of the support head 96 and a smaller diameter lower portion 152 intersecting the lower surface of the support head'96 forming what is sometimes referred to herein as a tube outlet. A pair of annular stop surfaces 154 are formed in the support head 96 and each stop surface 154 is dis-' posed generally between the upper and the lower portions and 152 in one of the tube openings 146 and n g 148, as shown more clearly in FIG. 5, each stop surface 154 being angularly disposed with respect to the axial center line of the tube openings 146 and 148. The stop surface 154 in the first tube opening 146 is positioned and shaped to engage the downwardly facing stop surface 132 formed on the tube 112 and the stop surface 154 in the second tube opening 148 is positioned and shaped to engage the downwardly facing stop surface 136 formed on the tube 114, the engagement between the stop surfaces 154 in the tube openings 146 and 148 and the stop surfaces 132 and 136 on the tubes 1 12 and 114, respectively, limiting the movement of the tubes 112 and 114 in a downwardly direction 156 through the tube openings 146 and 148 positioning each of the tubes 1 12 and 114 in one direction in an assembled position within one of the tube openings 146 and 148.

As shown more clearly in FIG. 5, a pair of apertures 158 and 160 are formed through the flange 90 of the U-shaped bracket 84 and a pair of apertures 162 and 164 are formed through the band 46 of the blade frame 24, as shown more clearly in FIG. 5. In an assembled position of the fluid applicator assembly 18 secured to the blade frame 24, the lower portion 152 of the first tube opening 146 is axially aligned with the apertures 158 and 162 and the lower portion 152 of the second tube opening 148 is axially aligned with the apertures 160 and 164. The lower portions 152 of the first, and the second tube openings 146 and 148 and the apertures 158, 160, 162 and 164 each have a diameter slightly greater than the outside diameter of the tubes 112 and 114 so that the tubes 112 and 114 are each insertable through one of the lower portions 152 and through the apertures 158, 160, 162 and 164 aligned therewith.

1n onepreferred form, and as shown more clearly in FIG. 5, the upper portion 150 of the tube openings 146 The plugs 166 and 168 are constructed similarly, each plug 166 and 168 having a tapered end 170 and a plug head 172 formed on one end opposite the tapered end 170 thereof. The tapered end 1700f each of the plugs 1-66 and 168 forms a stop surface 174 engaging .one of the engaging surfaces-134 or 138 of the first or the sec-j ond tubes 112 or 114, each of the plugs 166 and 168 cooperating to secure the tubes 112 and 114 in an assembled position removably supported within a portion of the support head 96, in a manner to be described in greater detail below.

An annular recess 176 is formed in each of the plugs 166 and 168, each annular recess 176 extending peripherally or circumferentially about one of the plugs 166 and 168 generally between the tapered ends .170 and threaded upper end portions 178 formed on the plugs 166 and 168. A plug opening 180 is formed through a portion of each of the plugs 166 and 168,

each plug opening 180 extending a distance axially through a portion of one of the plugs 166 and 168 and one end of each plug opening 180 intersecting the tapered end 170 of.the plugs 166 and 168. Each plug opening 180 has a transversely extending portion 182 formed near the end of the plug opening 180, opposite the end intersecting the tapered end 170, each transversely extending portion 182 intersecting one of the annular recesses 176 of the plugs 166 and 168.

In an assembled position of the plugs 166 and 168, as shown more clearly in FIGS. and 6, each plug 166 and 168 is sized such that the annular recess 176 and the transversely extending portion 182 of the plug opening 180 is aligned and in fluidic communication with the end of one of the channels 140 and 142, the annular recess 176 and the plug 166 being more particularly aligned and in fluidic communication with the first channel 140 and the annular recess 176 of the plug 168 being more particularly aligned and in fluidic communication with the second channel 142. Further, the plug opening 180 is positioned and located in the plug 166 such that the plug opening 180, in an assembled position thereof, is axially aligned and in fluidic communication with the hollow portion 113 of the tube 112, the hollow portion 113 of the tube 112 being in fluidic communication with the threaded inlet opening 110 via the plug opening 180 and the annular recess 176 of the plug 166 and the first channel 140. The plug opening 180 of the plug 168 is axially aligned and in fluidic communication with the hollow portion 115 of the tube 114 in an assembled position of the plug 168, the hollow portion 115 being in fluidic communication with the threaded inlet opening 110 via the plug opening 180 in the annular recess 176 of the plug 168 and the second channel 142. Thus, the plugs 166 and 168 provide fluidic communication between the hollow portions 113 and 115 of the tubes 112 and 114 and the first and the second channels 140 and 142 while simultaneously securing each of the tubes 112 and 114 in an assembled position within the tube openings 146 and 148, respectively.

Since the recesses 176 extend circumferentially about each of the plugs 166 and 168, the fluidic communication established via the plugs 166 and 168 is independent of the rotational position of the plugs 166 and 168 within the tube openings 146 and 148. It should also be noted that the engagement between the stop surfaces 174 of the plugs 166 and 168 and the engaging surfaces 134 and 138 of the tubes 112 and 114 is positioned and controlled via the stop surfaces 154 in the tube openings 146 and 148 to position each of the plugs 166 and 168 in a predetermined assembled position within the tube openings 146 and 148 establishing the fluidic communication described before.

It should be noted that, in one preferred form, the upper portions 150 of the tube openings 146 and 148 are each tapered inwardly toward the respective lower portions 152 and the plugs 166 and 168 are tapered in a similar manner. The gradual taper of the plugs 166 and 168 and the tube openings 146 and 148 provides a threaded engagement tending to substantially reduce the possibility of the plugs 166 and 168 backing out of threaded engagement due to vibration of the cutting apparatus during the operation thereof.

As shown more clearly in FIGS. 2 and 4, an aperture 186 is formed through a portion of the support plate 42 of the blade frame 24 and an aperture 188 is formed through the support plate 44 of the blade frame 24. The aperture 186 is generally aligned with a portion of the extended portion 116 of the tube 112 and is disposed a distance 190 from the lower surface 100 of the support head 96, the distance 190 being less than the distance 117. The aperture 188 is generally aligned with the extended portion 118 of the tube 114 and is disposed a distance 192 from the lower surface 100 of the support head 96, the distance 192 being less than the distance 119.

A removable fastener 194 extends through the aperture 186 in the blade frame 14 and a portion of the removable fastener 194 is disposed about and retainingly engages the extended portion 116 of the tube 112 securing the extended portion 116 of the tube 112 to the support plate 42 of the blade frame 24 spaced a predetermined distance 196 from the face 34 of the cutting blade 14. A removable fastener 197 extends through the aperture 188 in the blade frame 14 and a portion of the removable fastener 197 is disposed about and retainingly engages the extended portion 118 of the tube 114 securing the extended portion 118 of the tube 114 to the support plate 44 of the blade frame 24 spaced a predetermined distance 198 from the face 36 of the cutting blade 14. The fasteners 194 and 197 are each, in one preferred form, and as shown in the drawings, of a cotter pin type of construction and each of the fasteners 194 and 197 is removably secured to one of the support plates 42 and 44 of the blade frame 24 in an assembled position of the fasteners 194 and 197 connected to the tubes 112 and 114. The fasteners 194 and 197 thus each secure one of the tubes 112 and 114 in a predetermined operational position spaced a predetermined distance from the cutting blade 14 to reduce the possibilities of the cutting blade 14 engaging one of the extended portions 116 and 118 of the tubes 112 and 114 and damaging or destroying the tubes 112 and 114 during the operation of the cutting apparatus 10.

As shown more clearly in FIGS. 2 and 3, the support head 96 is removably secured to the flange of the U- shaped bracket 84 via a pin 200 having a pin head 202 formed on one end thereof. In an assembled position of the pin 200 connected to the U-shaped bracket 84, the

pin head 202 is disposed between the flange 90 and the band 46 of the blade frame 24. A portion of the pin 200 extends upwardly through an opening 204 formed through the flange 90 and through an axially aligned pin opening 206 formed through the support head 96 to an assembled position wherein a portion 208 of the pin 200 extends a distance above the upper surface 98 of the support head 96, the pin opening 206 extending transversely through the support head 96 intersecting the upper and the lower surfaces 98 and thereof, as shown in FIGS. 2 and 6. As shown more clearly in FIG. 6, the opening 206 formed through the support head 96 is disposed generally between the first and the second channels and 142 and extends generally transversely through the support head 96 with respect to the angular dispositions of the first and the second channels 140 and 142 in the support head 96.

In one position of the cutting apparatus 10, the support head 96 is disconnected from the blade frame 24 and, in this position, the pin 200 extends a distance above the supporting surface 94 of the U-shaped bracket 84 and the pin head 202 is retainingly disposed between the blade frame 24 and the flange 90 of the U- shaped bracket 84 via the engagement between the pin head 202 and the flange 90 limiting the movement of the pin through the opening 204 in the flange 90 in one direction. In this position of the pin 200, the support head 96 is positioned generally over the portion of the pin 200 extending above the supporting surface 94 to a position wherein the pin opening 206 through the support head 96 is generally aligned with the pin 200,

the support head 96 being moved downwardly to a position wherein the lower surface 100 of the support head 96 engages the supporting surface 94 of the U- shaped bracket 84 disposing a portion of the pin 200 through the pin opening 206 in the support head 96 in the assembled position wherein the portion 208 is extended a distance above the upper surface 98 of the support head 96. In this position, a cotter pin type of fastener 210 is inserted through an opening (not shown) formed through the portion 208 of the pin 200, the fastener 210 extending through and engaging a portion of the pin 200 and engaging a portion of the upper surface 98 of the support head 96 removably securing the support head 96 in an assembled position connected to the flange 90 of the U-shaped bracket 84.

During the operation of the cutting apparatus 10, the lower end portions 122 and 126 of the tubes 112 and 114 are each inserted through one of the tube openings 146 and 148 to a position wherein the flared upper end portions 120 and 124 each engage one of the stop surfaces 154 positioning the tubes 112 and 114 in one direction in the tube openings 146 and 148. In this position, the plug 166 is threadedly secured in the first tube opening 146 to a position wherein the tapered end 170 of the plug 166 engages the engaging surface 134 of the tube 112 securing the flared upper end portion 120 of the tube 112 in an assembled position between the tapered end 170 of the plug 166 and the upwardly facing stop surface 154 in the tube opening 146. In a similar manner, the plug 168 is threadedly secured in the second tube opening 148 to a position wherein the tapered end 170 of the plug 168 engages the engaging surface 138 of the tube 114, the upper end portion 124 of the tube 114 being secured between the tapered end 170 of the plug 168 and the upwardly facing stop surface 154 in the tube opening 148. The extended portions 116 and 118 of the tubes 112 and 114 are then each secured to the blade frame 24 via the removable fasteners 194 and 197, thereby securing the tubes 112 and 114 in an assembled position wherein the fluid openings 128 formed through the tube 112 are disposed near the face 34 of the cutting blade 14 spaced the distance 196 therefrom and the fluid openings 130 in the tube 114 are disposed near the face 36 of the cutting blade 14 spaced the distance 198 therefrom.

After the support head 96 has been secured to the U- shaped bracket 84 and the tubes 112 and 114 secured in an assembled position within the tube openings 146 and 148 via the plugs 166 and 168, the fluid port 108 is connected to the fluid source 20 via a flexible fluid hose 212, as schematically shown in FIG. 1, and a hand operated valve 214 is interposed between the support head 96 and the fluid source 20. A threaded end 216 of the valve 214 is threadedly secured within the threaded inlet opening 110 of the support head 96 and the valve inlet (not shown) is connected to the end of the fluid hose 212, opposite the end of the fluid hose 212 connected to the fluid source 20, via a connector 218, as shown in FIGS. 1, 2 and 3.

The valve 214 includes a handle 220 connected to a valve member (not shown in the drawings) and is constructed such that in an open position of the handle 220, the valve member is rotated to a position opening the valve and establishing fluidic communication between the fluid source 20 and the fluid port 108 in the support head 96 via the valve 214 such that in a closed position of the handle 220, the valve member 12 is positioned to interrupt fluidic communication between the fluid source 20 and the fluid port 108 in the support head 96. The construction and operation of fluid valves for establishing and interrupting fluidic communication such as described before with respect to the valve 214 are well-known in the art and a detailed description of the various components of the valve and the operation thereof is not required herein.

During the operation'of the cutting apparatus-l0, the valve 214 is positioned in the open position and fluid from the fluid source 20 is applied to the faces 34 and 36 of the cutting blade 14 via the fluid openings 128 and in the tubes 112 and 114, respectively. The drive assembly 16 is positioned in the on position drivingly rotating the cutting blade 14 in a rotational direction 230 about the shaft 40. The fluid applied to the cutting blade 14 is thus applied to portions of the cutting blade 14 prior to those portions of the cutting blade 14 cuttingly engaging the material to be cut.

The cutting apparatus 10 of the present invention has been found particularly useful for cutting concrete and the like. In this particular application, the fluid applied to the cutting blade 14 via the fluid applicator assembly 18 is carried by the blade 14 and brought into contact with the concrete material being cut and the cut concrete material. The wetting of the concrete material being out via the fluid applied to the cutting blade 14 substantially reduces the cut concrete dust resulting from the cutting operation thereby substantially reducing the accompanying hazards to the various operating personnel. It should be noted that in many applications the concrete dust is virtually eliminated by controlling the amount of fluid applied via the fluid applicator assembly 18 during the cutting operation. This aspect of the present invention is particularly important when the cutting apparatus 10 is utilized to cut concrete material or the like in a closed environment such as a substantially closed room in a building, for example, where the cut concrete dust tends to accumulate and fill the room greatly increasing the hazard of operating personnel, the fluid applied to the material being cut via the cutting apparatus 10 substantially reducing the accumulated dust and providing a safer working environment.

Changes may be made in the construction and the operation of the various components described herein without departing from the spirit and the scope of the invention as defined in the following claims.

What is claimed is:

1. A cutting appratus, having a portion for applying a fluid from a fluid source in one position, comprising:

frame means;

a cutting blade supportedly connected to the frame means;

drive means connected to the cutting blade drivingly moving the cutting blade in an on position thereof;

a support head connected to the frame means, having a fluid port formed through portion thereof, the fluid port including a channel formed through a portion of the support head and a tube opening formed through a portion of the support head extending at an angle to the channel, one end of the tube opening intersecting the support head forming a fastener inlet and the opposite end of the tube opening intersecting another portion of the support head forming a tube outlet and the channel intersecting and fluidically communicating with the 13 tube opening, a stop surface being formed in the support head and positioned within a portion of the tube opening;

a hollow tube removably disposed and supported within a portion of the tube opening in the support head having an extended portion extending a distance from the support head and disposed near the cutting blade in an assembled position of the tube, a fluid opening formed through a portion of the extended portion of the'tube intersecting and fluidically communicating with the hollow portion of the tube and the hollow portion of the tube fluidically communicating with the fluid port in an assembled position of the tube in the support head, a tube stop surface and an engaging surface being formed on a portion of the tube, the tube stop surface engaging the stop surface formed in the support head limiting the movement of the tube in one direction in the tube opening;

means removably connected to a portion of the support head having a portion engaging a portion of the tube limiting the movement of the tube in a directions, opposite the direction limited via the stop surface in the support head and securing the tube in an assembled position in the support head, said means comprising:

a plug removably disposed through the fastener inlet in the support head having a stop surface formed on a portion thereof and a plug opening formed therein, the stop surface formed on the plug engaging the engaging surface of the tube and securing the tube in an assembled position, the plug opening fluidically communicating with the hollow portion of the tube and fluidically communicating with the channel in the support head for providing fluidic communication between the channel in the support head and the hollow portion of the tube via the plug opening in an assembled position; and

means connecting the support head and the fluid source establishing fluidic communication between the fluid source and the channel, the fluid source being in fluidic communication with the fluid opening in the tube via the fluid port in one position, the fluid from the fluid source being applied to the cutting blade via the fluid opening.

2. The apparatus of claim 1 defined further to include:

a blade frame, having an aperture formed through a portion thereof, connected to the support frame and encompassing a portion of the cutting blade; and

a bracket secured to the blade frame; and wherein the support head is removably connected to the bracket, the extended portion of the tube extending through the aperture in the blade frame; and wherein the apparatus is defined further to include: a fastener extending through the blade frame and retainingly engaging the extended portion of the tube securing the extended portion of the tube to the blade frame spaced a predetermined distance from the cutting blade.

3. The apparatus of claim 2 wherein the cutting blade includes a cutting surface, a portion of the blade frame encompassing the cutting surface; and wherein the bracket is U-shaped, having a pair of legs, a supporting surface, and an opening formed through the supporting surface, the legs being secured to the blade frame spacing the supporting surface a distance above the blade frame and the support head being removably connected to the supporting surface of the bracket; and wherein the apparatus includes: a pin, having opposite ends and a pin head formed on one end thereof, the pin extending through the opening in and a distance above the support surface of the bracket and the pin head being retainingly disposed between the blade frame and the bracket and'engaging the support surface of the bracket limiting the movement of the pin through the opening in the support surface in one direction; and wherein the support head includes a pin opening extending through a portion thereof, the end of the pin, opposite the pin head end, extending through the pin opening in the support head and a distance beyond the support head; and means removably connected to the end of the pin extending beyond the support head and engaging the support head removably securing the support head to the bracket via the pin.

4. The apparatus of claim 1 wherein the stop surface is defined further as being formed in the support-head and disposed within the tube opening between the fastener inlet and the tube outlet facing upwardly generally toward the fastener inlet; and wherein one end of the tube is flared outwardly from the hollow portion, the flared portion of the tube forming the tube stop sur-- face and the engaging surface, the end of the tube, opposite the flared end being closed forcing the fluid in the hollow portion of the tube to be directed outwardly through the fluid opening.

5. The apparatus of claim 4 wherein a portion of the tube opening near the fastener inlet is threaded; and wherein the plug is defined further to include: a threaded end, a tapered end, an annular recess formed therein and extending peripherally thereabout between the threaded end and the tapered end, one end of the plug opening intersecting the annular recess and the opposite end of the plug opening intersecting the tapered end of the plug, the threaded end of the plug threadedly engaging the threaded portion of the tube opening and the tapered end of the plug forming the stop surface engaging the engaging surface of the tube and securing the tube in an assembled position, the portion of the plug opening intersecting the tapered end fluidically communicating with the hollow portion of the tube and the annular recess of the plug fluidically communicating with the end of the channel intersecting the tube opening, the plug providing fluidic communication between the channel and the hollow portion of the tube via the plug recess and the plug opening in an assembled position.

6. The apparatus of claim 1 wherein the cutting blade includes a cutting surface and a pair of faces: and wherein the fluid port in the support head is defined further to include a first channel and a second channel formed in a portion of the support head, one end of the first channel and one end of the second channel each intersecting a portion of the support head forming a common inlet opening and the first channel extending angularly through the support head with respect to the second channel and a first and a second tube opening formed in the support head, the first tube opening extending at an angle to the first channel and a portion of the first channel intersecting a portion of the first tube opening, and the second tube opening extending at an angle to the second channel and a portion of the second channel intersecting a portion of the second tube opening; and wherein the tube is removably disposed in a portion of one of the first and the second tube openings; and wherein the apparatus is defined further to include a second tube removably disposed in a portion of one of the first and the second tube openings opposite the disposition of the first-mentioned tube; and wherein the means connecting the fluid source and the support head is defined further as connecting the fluid source to the common inlet opening formed via the first and the second channels establishing fluidic communication therebetween.

7. The apparatus of claim 6 wherein the first tube opening is defined further as being positioned to position the extended portion of the tube removably disposed therein generally near one face of the cutting blade, and wherein the second tube opening is defined further as being positioned to position the extended portion of the tube removably disposed thereingenerally near the face of the cutting blade, opposite the face of the cutting blade disposed near the first-mentioned blade.

8. The apparatus of claim 1 wherein the tube is disposed near a portion of the cutting blade applying fluid thereon prior to the portion of the cutting blade being driven into cutting engagement with the material to be cut via the drive means.

9. The apparatus of claim 1 wherein the frame means is defined further to include: a support frame, having a handle formed on a portion thereof; and a blade frame connected to the support frame and protectively encompassing a portion of the cutting blade; and wherein the apparatus is defined further to include: a pivot bar secured to a portion of the blade frame providing a supporting surface engageable with the material to be cut, the cutting apparatus supported via the handle and the engagement between the pivot bar and the material to be cut balancing the cutting apparatus at a point generally adjacent the cutting surface for pivotal movement thereabout bringing the cutting surface into and away from cutting engagement with the material to be cut.

10. A cutting apparatus, having a portion for applying a fluid from a fluid source in one position, comprising:

a support frame;

a cutting blade supportedly connected to the support frame having a cutting surface;

drive means connected to the cutting blade drivingly moving the cutting blade in an on position thereof; a blade frame connected to the support frame and encompassing a portion of the cutting blade and a portion of the cutting surface of the cutting blade, the blade frame having an aperture formed through a portion thereof;

a bracket secured to the blade frame, the bracket being generally U-shaped and having a pair of legs, a supporting surface and an opening formed through the supporting surface, the legs being secured to the blade frame spacing the supporting surface a distance above the blade frame;

a pin, having opposite ends and a pin head formed on one end thereof, the pin extending through the opening in and a distance above the support surface of the bracket and the pin head being retainingly disposed between the blade frame and the bracket and engaging the support surface of the bracket limiting the movement of the pin through the opening in the support surface in one direction;

a support head removably connected to the supporting surface of the bracket and having a fluid port formed through a portion thereof, the fluid port including a channel formed through a portion of the support head and a tube opening formed through a portion of the support head extending at an angle to the channel, the channel intersecting and fluidically communicating with the tube opening, a stop surface being formed in the support head and positioned within a portion of the tube opening, the support head having a pin opening extending through a portion thereof and the end of the pin, opposite the pin head end, extending through the pin opening a distance beyond the support head;

means removably connected tothe end of the pin extending beyond the support head and engaging the support head removably securing the support head to the bracket via the pin;

a hollow tube removably disposed and supported within a portion of the tube opening in the support head having an extended portion extending through the aperture in the blade frame and extending a distance from the support head and disposed near the cutting blade in an assembled position of the tube, a fluid opening formed through a portion of the extended portion of the tube intersecting and fluidically communicating with the hollow portion of the tube and the hollow portion of the tube fluidically communicating with the fluid port in an assembled position of the tube in the support head, a tube stop surface being formed on a portion of the tube for engaging the stop surface formed in the support head limiting the movement of the tube in one direction in the tube opening;

means removably connected to a portion of the support head having a portion engaging a portion of the tube limiting the movement of the tube in a direction, opposite the direction limited via the stop surface in the support head and securing the tube in an assembled position in the support head;

means connecting the support head and the fluid source establishing fluidic communication between the fluid source and the channel, the fluid source being in fluidic communication with the fluid opening in the tube via the fluid port in one position, the fluid from the fluid source being applied to the cutting blade via the fluid opening; and

a fastener extending through the blade frame and retainingly engaging the extended portion of the tube securing the extended portion of the tube to the blade frame space a predetermined distance from the cutting blade. 

1. A cutting appratus, having a portion for applying a fluid from a fluid source in one position, comprising: frame means; a cutting blade supportedly connected to the frame means; drive means connected to the cutting blade drivingly moving the cutting blade in an on position thereof; a support head connected to the frame means, having a fluid port formed through portion thereof, the fluid port including a channel formed through a portion of the support head and a tube opening formed through a portion of the support head extending at an angle to the channel, one end of the tube opening intersecting the support head forming a fastener inlet and the opposite end of the tube opening intersecting another portion of the support head forming a tube outlet and the channel intersecting and fluidically communicating with the tube opening, a stop surface being formed in the support head and positioned within a portion of the tube opening; a hollow tube removably disposed and supported within a portion of the tube opening in the support head having an extended portion extending a distance from the support head and disposed near the cutting blade in an assembled position of the tube, a fluid opening formed through a portion of the extended portion of the tube intersecting and fluidically communicating with the hollow portion of the tube and the hollow portion of the tube fluidically communicating with the fluid port in an assembled position of the tube in the support head, a tube stop surface and an engaging surface being formed on a portion of the tube, the tube stop surface engaging the stop surface formed in the support head limiting the movement of the tube in one direction in the tube opening; means removably connected to a portion of the support head having a portion engaging a portion of the tube limiting the movement of the tube in a directions, opposite the direction limited via the stop surface in the support head anD securing the tube in an assembled position in the support head, said means comprising: a plug removably disposed through the fastener inlet in the support head having a stop surface formed on a portion thereof and a plug opening formed therein, the stop surface formed on the plug engaging the engaging surface of the tube and securing the tube in an assembled position, the plug opening fluidically communicating with the hollow portion of the tube and fluidically communicating with the channel in the support head for providing fluidic communication between the channel in the support head and the hollow portion of the tube via the plug opening in an assembled position; and means connecting the support head and the fluid source establishing fluidic communication between the fluid source and the channel, the fluid source being in fluidic communication with the fluid opening in the tube via the fluid port in one position, the fluid from the fluid source being applied to the cutting blade via the fluid opening.
 2. The apparatus of claim 1 defined further to include: a blade frame, having an aperture formed through a portion thereof, connected to the support frame and encompassing a portion of the cutting blade; and a bracket secured to the blade frame; and wherein the support head is removably connected to the bracket, the extended portion of the tube extending through the aperture in the blade frame; and wherein the apparatus is defined further to include: a fastener extending through the blade frame and retainingly engaging the extended portion of the tube securing the extended portion of the tube to the blade frame spaced a predetermined distance from the cutting blade.
 3. The apparatus of claim 2 wherein the cutting blade includes a cutting surface, a portion of the blade frame encompassing the cutting surface; and wherein the bracket is U-shaped, having a pair of legs, a supporting surface, and an opening formed through the supporting surface, the legs being secured to the blade frame spacing the supporting surface a distance above the blade frame and the support head being removably connected to the supporting surface of the bracket; and wherein the apparatus includes: a pin, having opposite ends and a pin head formed on one end thereof, the pin extending through the opening in and a distance above the support surface of the bracket and the pin head being retainingly disposed between the blade frame and the bracket and engaging the support surface of the bracket limiting the movement of the pin through the opening in the support surface in one direction; and wherein the support head includes a pin opening extending through a portion thereof, the end of the pin, opposite the pin head end, extending through the pin opening in the support head and a distance beyond the support head; and means removably connected to the end of the pin extending beyond the support head and engaging the support head removably securing the support head to the bracket via the pin.
 4. The apparatus of claim 1 wherein the stop surface is defined further as being formed in the support head and disposed within the tube opening between the fastener inlet and the tube outlet facing upwardly generally toward the fastener inlet; and wherein one end of the tube is flared outwardly from the hollow portion, the flared portion of the tube forming the tube stop surface and the engaging surface, the end of the tube, opposite the flared end being closed forcing the fluid in the hollow portion of the tube to be directed outwardly through the fluid opening.
 5. The apparatus of claim 4 wherein a portion of the tube opening near the fastener inlet is threaded; and wherein the plug is defined further to include: a threaded end, a tapered end, an annular recess formed therein and extending peripherally thereabout between the threaded end and the tapered end, one end of the plug opening intersecting the annular recess and the opposite end of the plug opening intersecting tHe tapered end of the plug, the threaded end of the plug threadedly engaging the threaded portion of the tube opening and the tapered end of the plug forming the stop surface engaging the engaging surface of the tube and securing the tube in an assembled position, the portion of the plug opening intersecting the tapered end fluidically communicating with the hollow portion of the tube and the annular recess of the plug fluidically communicating with the end of the channel intersecting the tube opening, the plug providing fluidic communication between the channel and the hollow portion of the tube via the plug recess and the plug opening in an assembled position.
 6. The apparatus of claim 1 wherein the cutting blade includes a cutting surface and a pair of faces: and wherein the fluid port in the support head is defined further to include a first channel and a second channel formed in a portion of the support head, one end of the first channel and one end of the second channel each intersecting a portion of the support head forming a common inlet opening and the first channel extending angularly through the support head with respect to the second channel and a first and a second tube opening formed in the support head, the first tube opening extending at an angle to the first channel and a portion of the first channel intersecting a portion of the first tube opening, and the second tube opening extending at an angle to the second channel and a portion of the second channel intersecting a portion of the second tube opening; and wherein the tube is removably disposed in a portion of one of the first and the second tube openings; and wherein the apparatus is defined further to include a second tube removably disposed in a portion of one of the first and the second tube openings opposite the disposition of the first-mentioned tube; and wherein the means connecting the fluid source and the support head is defined further as connecting the fluid source to the common inlet opening formed via the first and the second channels establishing fluidic communication therebetween.
 7. The apparatus of claim 6 wherein the first tube opening is defined further as being positioned to position the extended portion of the tube removably disposed therein generally near one face of the cutting blade, and wherein the second tube opening is defined further as being positioned to position the extended portion of the tube removably disposed therein generally near the face of the cutting blade, opposite the face of the cutting blade disposed near the first-mentioned blade.
 8. The apparatus of claim 1 wherein the tube is disposed near a portion of the cutting blade applying fluid thereon prior to the portion of the cutting blade being driven into cutting engagement with the material to be cut via the drive means.
 9. The apparatus of claim 1 wherein the frame means is defined further to include: a support frame, having a handle formed on a portion thereof; and a blade frame connected to the support frame and protectively encompassing a portion of the cutting blade; and wherein the apparatus is defined further to include: a pivot bar secured to a portion of the blade frame providing a supporting surface engageable with the material to be cut, the cutting apparatus supported via the handle and the engagement between the pivot bar and the material to be cut balancing the cutting apparatus at a point generally adjacent the cutting surface for pivotal movement thereabout bringing the cutting surface into and away from cutting engagement with the material to be cut.
 10. A cutting apparatus, having a portion for applying a fluid from a fluid source in one position, comprising: a support frame; a cutting blade supportedly connected to the support frame having a cutting surface; drive means connected to the cutting blade drivingly moving the cutting blade in an on position thereof; a blade frame connected to the support frame and encompassing a portion of the cuttinG blade and a portion of the cutting surface of the cutting blade, the blade frame having an aperture formed through a portion thereof; a bracket secured to the blade frame, the bracket being generally U-shaped and having a pair of legs, a supporting surface and an opening formed through the supporting surface, the legs being secured to the blade frame spacing the supporting surface a distance above the blade frame; a pin, having opposite ends and a pin head formed on one end thereof, the pin extending through the opening in and a distance above the support surface of the bracket and the pin head being retainingly disposed between the blade frame and the bracket and engaging the support surface of the bracket limiting the movement of the pin through the opening in the support surface in one direction; a support head removably connected to the supporting surface of the bracket and having a fluid port formed through a portion thereof, the fluid port including a channel formed through a portion of the support head and a tube opening formed through a portion of the support head extending at an angle to the channel, the channel intersecting and fluidically communicating with the tube opening, a stop surface being formed in the support head and positioned within a portion of the tube opening, the support head having a pin opening extending through a portion thereof and the end of the pin, opposite the pin head end, extending through the pin opening a distance beyond the support head; means removably connected to the end of the pin extending beyond the support head and engaging the support head removably securing the support head to the bracket via the pin; a hollow tube removably disposed and supported within a portion of the tube opening in the support head having an extended portion extending through the aperture in the blade frame and extending a distance from the support head and disposed near the cutting blade in an assembled position of the tube, a fluid opening formed through a portion of the extended portion of the tube intersecting and fluidically communicating with the hollow portion of the tube and the hollow portion of the tube fluidically communicating with the fluid port in an assembled position of the tube in the support head, a tube stop surface being formed on a portion of the tube for engaging the stop surface formed in the support head limiting the movement of the tube in one direction in the tube opening; means removably connected to a portion of the support head having a portion engaging a portion of the tube limiting the movement of the tube in a direction, opposite the direction limited via the stop surface in the support head and securing the tube in an assembled position in the support head; means connecting the support head and the fluid source establishing fluidic communication between the fluid source and the channel, the fluid source being in fluidic communication with the fluid opening in the tube via the fluid port in one position, the fluid from the fluid source being applied to the cutting blade via the fluid opening; and a fastener extending through the blade frame and retainingly engaging the extended portion of the tube securing the extended portion of the tube to the blade frame space a predetermined distance from the cutting blade. 